Jetty



Patented Sept. 22, 1925.

PATENT OFFICE.

LLOYD B. SMITH, or TOPEKA, KANSAS.

JETTY.

Application filed January 13, 1922. Serial No. 528,998.

To all whom i may concern.-

Be it known that I, LLOYD B. SMITH, a citizen of the United States, residing at Topeka, in the county of Shawnee and State of Kansas, have invented a new and userul Jetty, of which the following is a speclfication. r

It is the object of my invention to provlde a jetty unit which may be readily comb ned with other similar units to produce a etty of any desired length and shape; which 1s of great durability, and is not destroyed even by the rusting away of its iron parts; which has great stability,so that it tends strongly to remain in place; which is most effective in catching drift; and which is simple in construction, is of minimum cost, and can either be constructed on the shore and readily put in place in the stream or can easily be constructed in final position.

The accompanying drawing illustrates my inventionz-Fig. 1 is a plan of a bend in a stream, with several jetty units embodying my invention in place therein; Fig. 2 is a perspective view of one such jetty unit, complete; Fig. 3 is a plan of the metal frame-work of such a unit, with the upper clamping plate removed; Fig. 4 is an oblique elevation of the frame-work shown in Fig. 3, but on a smaller scale; Fig. 5 is an enlarged section on the line 55 of Fig. 4;

Fig. 6 is a plan and Fig. 7 an end elevation of one of the clamping plates; Fig. 8 is an elevation of one of the V-pipes of the framework; and Figs. 9, 10, and 11 are fragmental views showing different schemes of reinforcing the concrete filling the V-pi-pes.

The jetty unit, in its preferred form, is built up of four tube sections 12, conveniently of round pipe, each bent into V-shape as shown in Fig. 8; and these four V-pipes 12 are assembled with their bases together, at the corners of a square as shown in Fig. 5, and with their arms all diverging. The angle between the arms of each V-pipe 12 is preferably such that when the four V-pipes are put together such arms diverge substantially along the diagonals of a rectangular prism, preferably a cube. The four V-pipes are clamped together by V-form clamping eye-bolts 13, which extend through the crotches of the V-pipes. Each V-bolt 13 projects through the eye 14 of the other, and by tightening nuts 15 on the projecting ends of such V-bolts the four V-pipes are firmly clamped together.

to fit an arm of a V-pipe,

To hold the arms of the V-pipes 12in proper relative position, two square clamping plates 16 are provided, each notched and preferably turned down at each corner (see Figs. 2, 6, and 7,) and each of these clamping plates engages one arm of each V-pipe; and the two clamping plates 16 lie on opposite sides of the plane of the V-bolts 13 and are drawn together by a central bolt 17 and its nut 18. The bolt 17 is transverse to the plane of the V-bolts 13, and passes through the space at the center of the assembly of the bases of the four V-pipes 12. The bolt 17 co-operates with the V-bolts 13 tohold ther 1V-pipes 12 in. proper relative position.

1e V-pipes 12, after being assembled as just explained, are embedded in a mass of concrete 20. This is at the center of the complete jetty unit. The concrete mass 20 is conveniently cubiform, with the clamping plates 16 at opposite sides of the cube. This concrete mass 20 preferably has suitable reinforcements 21.

In addition the V-pipes 12 are themselves filled with concrete 22, conveniently with suitable embedded reinforcements for all or part of their lengths. The reinforce ments of the concrete 22 may be anything desired: such as a central rod 23, shown in 9; or a tubular screen 24, shown in F 1g. 10; or woven rods or wires 25 lying in transverse planes, shown in Fig. 11.

The metal parts of the jetty unit can be made of standard material, and at a point removed from the place of use. The complete jetty unit can be made on the shore, if desired, and then suitably carried or dragged to its desired place in the stream 30, where it rests on four of its arms while the other four arms project divergingly upward. If desired, the jetty unit may be assembled in its final position, and the concrete poured there. Any'number of jetty units can be used, in any desired formation to build the desired jetty.

The jetty units catch the drift 31 in the stream 30, or hold brush specially placed if the drift is insuflicient; and as a result, dirt and sand are deposited near the jetty,

V-bolts 13 and the bases of the i mainly on the down-stream side thereof at the points 32.

The jetty unit is very stable, because of the weight of the central concrete mass 20 and the wide spread of the arms on which "that. of all-metal units. [metal parts corrode away, asis especially the unit rests. This stability, tends to prevent the jetty unit from being displaced. If desired or necessary, however, the several asociated jetty units may :be connected by cables or chains 33. The cable or chain 33 is suitably attached to the central concrete mass 20, as by a ring 35 the V-bolts 13.

r The life of the jetty units is greater than If the exposed slipped on one of likely to occur near the water line because of the alternate exposure to=air and water, the structure as a whole is unaffected; for there remains a reinforced concrete unit, consisting of the'centra l concrete mass 20 and diverging arms formed by the rein- "forcedconcrete fillings 22 of the'vrpipes'. I

ing downward supporting arms and one or more rigid upward arms projecting from said central mass.

3. A jetty uni,t,.comprising more than two V-shaped members, and a mass of concrete :in which thebases of said V-shaped members are embedded so that the arms project divergingly.

41-. A etty unit, comprismg a central mass of concrete, and eightarms pro ectingtherefrom substantially alongthe diagonals of a rectangular prism.

5; A jetty umt, comprising more than @two 'Vshaped tubes filled with concrete, and

means for clamping the bases of said V shaped tubes together so that the arms'there of project divergingly,

6; A'jetty unit, comprising a plurality of rigid arms projecting outward in a plurality of planes from a common center and "having their outer'ends free.

Inwitness whereof, I have hereunto set my hand at Indianapolis, Indiana, this 9th day of January, .A. D. one thousand nine hundred and'twentytwo.

LLOYD "B. I SMITH. 

